Stefan Carlsson fired a 35 to lead the Knoch boys golf team to a 196-206 win over Mars at Rittswood Golf Course.

Chad Tudor (38) and Jack Boros (39) also had strong rounds for the Knights.

Billy Bender and Alex Locher each had a 40 for Mars (8-2).

Knoch (196): Stefan Carlsson 35, Chad Tudor 38, Jack Boros 39, Jared Hennig 41, Matt Eshelman 43

Mars (206): Billy Bender 40, Alex Locher 40, Christian Locher 41, Josh Bartley 42, Ben Mullins 43

Venango Catholic 233, Karns City 236 — The Gremlins (3-2) fell at St. Jude Golf Club.

Venango Catholic (233): Ben Guth 43, Garrett Hawkins 44, Matt Kuhn 44, Max Dudzic 49, Ryan McMahon 53

Karns City (236): Tucker Preston 41, Trevor Beham 43, Tanner Kerschbaumer 47, Josh Jones 51, Mike Ridley 55

Keystone 210, Union 230 — Derek Shirley led the Golden Knights with a 40 at Clarion Oaks.

Keystone (210): Corbin Summerville 36, Jillian Love 40, Ben Wolbert 41, Beau Schettler 45, Ryan Wolbert 48

Union (230): Derek Shirey 40, Larissa Roberts 41, Shawn Burns 46, David Graham 48, Derek Priester 55

Burrell 221, Freeport 226 — The Yellowjackets (6-4, 5-2) were led by Tyler Thomas' 40 at Hillcrest Country Club.

Freeport (226): Tyler Thomas 40, Devin Earney 46, Richard Vandruff 46, Pat D'Amico 47, Josh Luchesa 47

Burrell (221): Zack Abel 39, Austen Devone 43, Nick Artman 45, Frank Trozzi 46, Tyler Miller 48

A-C Valley 217, Cranberry 242 — The Falcons (6-0) remained undefeated, thanks to a 41 by Allan Eaton.

A-C Valley (217): Logan Wetzel 42, Blayne McGuirk 43, Allan Eaton 41, Joe Callender 45, Ryan Bartley 46

Cranberry (242): Ryan Oxenham 47, Evan Fowler 47, Mike Switzer 49, Decklan Burkbart 49, Seth Karns 50

Seneca Valley 198, Butler 220 — At Cranberry Highlands, Mike McNulty shot a 35 and Blake Miller a 36 for the Raiders (5-3, 5-2).Phil Schultz paced Butler (3-5, 2-4) with a 41.

Butler (220): Phil Schultz 41, Anthony Paterno 42, Corey Morabito 44, David Paterno 45, Jeremy Gohn 48

Seneca Valley (198): Mike McNulty 35, Blake Miller 36, Tim Martin 41, Charlie Schade 42, Cole Bondo 44

Corry Invitational — Brett Rinker shot a 70 to lead Slippery Rock to a first-place finish at the 28-team event Thursday.The Rockets' 315 strokes were two better than second place General McLane.The one-under par effort was also good enough to earn Rinker medalist honors in a 112-golfer field.

Slippery Rock (315): Brett Rinker 70, Brian Giesler 77, Alex Sparn 82, Bob Paczkowski 86

Jenn Suder's 42 led Seneca Valley to a 192-226 win over Pine-Richland at Connoquenessing Country Club.<B>Pine-Richland (226): </B>Marissa Holdcroft 52, Maura Kelley 55, Ellen Grazel 59, Elizabeth Tomczak 60<B>Seneca Valley (192):</B> Jenn Suder 42, Paige Wojdyla 44, Stephanie Bullis 51, Alex Steighner 55

Ashley Sample had 12 kills and 10 service points to lead Freeport to a 25-18, 25-15, 25-9 sweep of Ford City.Rachel Grubbs added 14 points, five kills and four blocks, and Jessica McFadden had 20 points and 10 digs for the Yellowjackets.<B>Moniteau 3, Venango Catholic 0 —</B> Strong play at the net by Katie Brehm and Mariah Clark helped the Warriors to a 25-19, 25-13, 25-16 win.Alexis Brown had nine consecutive service points for Moniteau (1-1).<B>Clarion 3, A-C Valley 0</B> — The Falcons held their own against the top-ranked Class A team in the state, but ultimately fell 25-16, 25-13, 25-11.Kelsey Boocks had five blocks and five kills for the Falcons (0-1).

Cody Wolinski scored the lone goal in Slippery Rock's 1-0 win over Commodore Perry.Braden Sloan tallied an assist while Tyler Little made five saves.<B>Knoch 4, Freeport 0</B> — Trevor Gordon scored three goals and Kory Wood added another as the Knights continued to roll.Tavida Lio stopped four shots in goal for Knoch (3-0, 2-0), which has outscored its first three opponents 21-0.<B>Mount Lebanon 2, Seneca Valley 0</B> — The Blue Devils scored two goals in a two-minute span of the second half to hand the Raiders (3-1) their first defeat.<B>Karns City 7, Clarion-Limestone 1 —</B> Justin Ryan tallied three goals for the Gremlins (2-0-1), while Kristian Crosbie scored twice and Evan McGarvey and Andrew Johnston tallied one goal apiece.Evan McGarvey (2), Johnston (2), Anthony Easley and Ethan Pakutz recorded assists.

Katie Conlon, Brooke Ross and Alexandra Muck all won in singles play, sparking Knoch (6-0) to a 5-0 victory over Riverview.<B>Singles:</B> 1-Katie Conlon (K) def. Morgan Mazeski 6-0, 6-1; 2-Brooke Ross (K) def. Tori DiDomencio 6-2, 6-0; 3-Alexandra Muck (K) def. Danielle Marino 6-2, 6-4<B>Doubles:</B> 1-Alyssa King-Peggy Kanterman (K) def. Mary Andrejko-Kylie Osborn 6-2, 6-0; 2-Kiki Gordon-Kassie Fissore (K) def. Hannah Barnes-Margot Flowers 6-0, 6-2

Slippery Rock tied Commodore Perry 1-1. Aaron Gercken scored the Rockets' goal, assisted by Luke LaChance. Jacob Prelec had seven saves.